[PLEASE CLOSE] Plea GX vs Mystic Heart

My opponent has two Pokémon on their bench: Magearna-EX, with no energy attached to it, and one other, with a Metal energy attached to it. If I use Sylveon-GX's Plea GX to return Magearna-EX and the other Pokémon to their hand, is the Bench Pokémon with Metal energy attached to it affected by Plea GX?

Magearna-EX's Mystic Heart:
Prevent all effects of your opponent’s attacks, except damage, done to each of your Pokémon that has any [M] Energy attached to it. (Existing effects are not removed.)

Sylveon-GX's Plea GX:
Put 2 of your opponent’s Benched Pokémon and all cards attached to them into your opponent’s hand.

EDIT: Looked up the Japanese ruling. Magearna-EX is returned but the other Pokémon isn't.